A virus is a non-living entity with genetic material that requires a host cell to replicate.

“well a virus is a sort of living kind of living thing that has genetic material in it which all of your cells have genetic material in them but these viruses they can't replicate on their own so you know how like you get big your hair gets longer your nails get longer you get taller all of these things are cells in your body that are dividing yes well viruses can't divide without using another body they don't have the machinery so to speak to divide on their own so they have to infect a host that's the term we use to do that”